Description
Omba Rainbow Fish (Melanotaenia dumasi)
Overview
The Omba Rainbow Fish is a small, vibrant freshwater species prized for its shimmering scales and bold coloration, often displaying iridescent blues and subtle reds. Active and schooling in nature, it brings movement and color to community aquariums.
Origin
Native to Omba Island, Indonesia, where it inhabits clear, slow-flowing streams and freshwater lakes with abundant vegetation and open swimming areas.
Feeding
Omnivorous and easy to feed. Diet includes:
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High-quality flakes and pellets
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Frozen or live foods such as brine shrimp, daphnia, and bloodworms
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Occasional vegetable matter to enhance coloration
Tank Mates
Peaceful schooling species best kept in groups of 6 or more. Compatible with:
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Other small rainbowfish
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Tetras, danios, and rasboras
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Corydoras and other gentle bottom dwellers
Avoid: Fin-nipping or aggressive fish that may stress them.
Aggression
Low. Males may show minor display behavior during breeding but are otherwise peaceful.
Experience Level
Beginner to intermediate. Hardy and adaptable, making it suitable for well-maintained tropical community tanks.
Water Parameters
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Temperature: 74–82°F (23–28°C)
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pH: 6.8–7.8
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Hardness: 5–15 dGH
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Notes: Provide open swimming areas with some planted or rocky hiding spots; regular water changes maintain optimal health and coloration.
The Omba Rainbow Fish (Melanotaenia dumasi) is a colorful, peaceful, and active schooling species, ideal for aquarists seeking a dynamic and attractive freshwater centerpiece.